FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.

FactoidThis monstrous drum sound is actually a tiny jazz drum kit, played by Paul Clarvis, and recorded with mics at several locations within Chislehurst Caves, a network of 20 miles of man-made tunnels.